Talking-machine.



W. N. DENNISON.

'[ALK'ING MACHINE- APPLICATION FILED JULY 31.1911.

LWQAEM PatentedSept. 7, 1915.

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wltIvEss'Es g I I MITORNEV W. N. DENNISON.

TALKING MACHINE. APPLICATIQN 111511 JULY 31. 1911.

Patented Sept. 7, 1915.

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. INVENTOR WJbl/MlNDenzugan mfroRm/EY W. N. DENNISON;

TALKING MACHINE. APPLICATION FILED JULY 31, 191i- LWQAMQ v PatentedSeptL 7, 1915.

6 SHEETS-SHEET 3- fl. lllllllllllllimll INVENTOR ATTORNEY W.. N. DENNISON.

TALKING MACHINE. APPLICATION FILED JULY 31.1911.

Patented Sept. 7, 1915.

NVENTOR' WITNESSES A T TORN W- N. DENNISON.

TALKING MACHINE. v APPLIcATIbN FILED JULY 31.1911.

Patented Sept. 7, 1915.

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INVENTOW Arrowwav I W. N. DENNISON. TALKING MAQHINL- APPLICATION FILED JUIIY 3|. I911.

Patented Sept. 7, 1915.

6 SHEETSSHEET 6.

7 I INVENTOR arromve'v WITNESSES I WILBUBN N. DENNISON, 0F MERCHANTVILLE, NEW JERSEY, ASSIGNOR TO VICTOR TALKING- IVIACHINE COMPANY, A CORPORATION OF NIEEW JERSEY.

TALKING-MACHINE.

Specification of Letters Patent.

Patented Sept. '7, 1915.

Application filed July 31, 1911. Serial No. 641,640.

To all whom it may concern:

Be it known that I, WILBURN N. DENNI- soN, a citizen of the United States, and a resident of the borough of Merchantville, in the county of Camden, State of New Jersey, have invented certain new and useful Improvements in Talking-Machines, whereof the following is a specification, reference being hadto the accompanying drawings.

This invention relates to talking machines, and particularly to the sound transmitting or conveying mechanism for directing and delivering the sound waves generated by a sound reproducer, which is supported to be freely moved across a sound record disk by the contact of a stylus or needle with the soundv reproducing line' thereon, and may conveniently be applied to the well-knowntype of disk talking machine in which the hollow sound arm is pivoted to swing over the sound record in a plane parallel thereto.

The principal objects of this invention are, to provide a talking machine with a sound conveyer which forms a relatively long sound amplifier for the reverberation of the sound waves directed therethrough, and which is capable of inclosure by the walls of a talking machine cabinet of relatively small dimensions; to provide a sound conveyer having articulated sections telescopically connected for'relative oscillation about axes which are common to the contiguousends of adjacent sections; to provide means to eifect a substantially parallel motion to the section comprising the free end of said sound conveyer, whereby the stylus is directed to. traverse a rectilinear path over the sound record disk, radial to the axis of the turntable, and whereby the longitudinal axis of the stylus is tained in a plane which is substantial mal to the face of the sound record disk, and which is tangent to the successive convolutions of the sound producing line thereon at a point coincident with the point ofthe v stylusyand to provide a sound conveyer record disk without shortening said conveyer; and to provide a sound conveyer which may support a sound reproducer in such relation to the turn-table that the,

stylus may coact with that portion of the sound record disk lying farthest from, or nearest to the pivotal axis of said conveyer.

This invention further includes all of the various novel features of construction and arrangement hereinafter more definitely specified.

The form of this invention hereinafter described provides a talking machine of the type preferably provided with means for rotating a sound record disk, with a sound conveyer comprising an inclosed stationary sound amplifier having a laterally disposed inlet, an articulated laterally extended section forming a return-bend, which is pivotally connected, preferably in telescopic relation, with said stationary amplifier and with a horizontally extending tone arm, which carries the sound reproducer at its free end, and which is itself supported for reciprocation in a substantially rectilinear path by the articulated sections and by a link pivoted at its respectively opposite ends to the amplifier and to said tone arm, on axes parallel with the pivotal axes at the respectively opposite ends of the laterally extended section, the relative positions of said pivotal axes being such as to substantially maintain the free end of the tone arm iin 1: plane parallel with the sound record In the accompanying drawings, Figure 1 is a plan view of aninclosed talking ma chine ghaving a sound conveyer constructed in accdrdance with this invention, the lid or cover of the inclosing cabinet being removed for convenience of illustration; Fig. 2 is a vertical longitudinal sectional view of the cabinet shown in Fig. 1, taken on the line 22 in said figure, and showing the inclosed mechanism in elevation; Fig. 3 is a trans- ,verse vertical sectional view of said cabinet,

taken on the line 3-'-3 in Fig. -1, showing .the inclosed mechanism in elevation; Fig. 4

is a fragmentaryplan'view of a modified form of sound conveyer constructed in accordance with this invention, and having a sound reproducer in codperative relation is a side elevational view of the structure shown in Fig. 4, a fragment of the cabinet being shown in section, for convenience of illustration; Fig. 6 is a rear elevation of the sound conveyer shown in Figs. 4 and 5, showing its cooperative relation with a sound record disk; Fig. 7 is a fragmentary lan view similar to Fig. 4, showing another orm of sound conveyer constructed in accordance with this invention; Fig. 8 is a side elevation similar to Fig. 5, but showin the form of this invention illustrated in Fig. '7 and Fig. 9 is a rear elevation of the structure shown in Figs. 7 and 8.

Referring to the drawings, one embodi .ment of this invention comprises a cabinet 10 including a bottom wall 11, side walls 12, rear wall 13, front wall 14, having suitable doors 15 arranged to close the sound outlet aperturelfi therein, and a lid or cover 18 which is'hinged at 19 to the upper edge 20 of the cabinet body. Extending horlzontally within the cabinet walls, and slightly below the up er perimeter of said cabinet body, is a horlzontally disposed partition 22,'

' from which depends a motor 23, connected apertures 26 and.

to rotate a turn-table 24 arranged above the partition 22 to carry a sound record dlsk 25, the partition 22bein rovided with oblong 2%, through which the sound conveying mechanism extends as will appear hereinafter.

As best shown in Fig.- 2, an amplifier 28 depends from the partition 22 and has outwardly flaring side walls 29 and 30 and a downwardly sloping bottom wall 31 embracing the motor 23. Adjacent to the rear of the amplifier 28, and disposed transversely within the cabinet, below the horizontal partition, is a vertically extending partition 33, which supports a rearwardly extending stationary amplifier section 35, whose walls vconverge rearwardly at substantially the same angle as the walls of the amplifier'28,

and merge into a laterally extending cylin- I drical. portion 36, forming a circu'laropening in which is fitted a spider-frame 37. Projecting laterally and extending up: wardly from thecylindrical portion 36. 'or

smaller end of the amplifier section 35, and

communicating therewith,'is a movabletubular' section or support 39, which is substantially U-shaped, as best shown in Fig. 3,

J and 113513, lower horizontal cylindrical end I 40 fitted in telescopic relation within the cylindrical portion or end 36 of the stationary amplifier section 35, and is provided with a spider-frame 41'disposed therein adjacent to the end thereof. This movable tubular section 39. is connected in oscillatory relation withthe stationary amplifier section 35 by a horizontal rod or shaft'42, which is mounted in suitable bearing bosses 43 and 44, pro: .jectin'g-exteriorto the respective sections 35 .spaced slightly above the plane of the disk record 25. Spaced above the turn-table 24 is a substantially horizontal tapering tone arm 50, the major portion of which is preferably substantially straight and arranged longitudinally within the cabinet 10, and

the larger end.of which is curved longitudinally through an arc of 90 degrees and termlnates in a horizontal cylindrical portion which telescopes loosely in the upper cylixX drical end of the tubular support 39. spider-frame 51 is disposed within the cylindrical portion of the larger end of the tone arm 50. The larger end of the tone arm and the upper end of the tubular section 39 are pivotally connected by a horizontal rod or shaft 53, which extends through the spi-, der 46 and 51 and which is mounted in' suitable bearing bosses 54 and 55 provided therefor exteriorly on the tone arm 50 and on the tubular support 39, whereby these members are connected to oscillate with respect to each other about a common horizontal axis coinciding with the longitudinal axis of the rod53.

The tone arm 50 is maintained in a substantially horizontal plane by a link 57, which, as best shown in Figs. 2 and 3, is pivotally connected at its respectively opposite ends with a boss 58 on the am lifier section 35-by a stud 59, and with a ifurcated lug 60 on the tone arm 50 by a pintle 61. The .57 may be disposed in substantially parallel relation to a plane coinciding with the axes'of the shafts 42 and 53, so as to maintain the tone arm 50 in parallel relation to the plane of the turn-table 24, but it has been found by experiment that the location of the pivotal axes of the link 57 may be varied as desired so long as the outer free end of the section 50 is maintained in a plane parallel to-the plane of the turntable 24 in any position of reciprocation of said section. The free end of the section 50 may be conveniently provided with the transversely extending cylindrical barrel 63,

into which is telescopically fitted for oscillation, an outwardly curved tubular neck 64, having its outer free end arranged to receive 'a sound reproducer 65, which is maintained substantially constant angle with respect to the plane of the turn-table and in a plane substantially perpendicular to the plane of said turn-table, and progressively tangential with respect to the successive convolutions of the sound line of a sound record disk carried thereby.

It is to be noted that in the sound conveyer above described, the U-shaped return-bend orsection 39 may be disposed in closeproximity to the periphery of the turn-table 24,

whereby the cabinet may be comparatively short, and in view of the fact that the tone arm 50 extends across the turn-table, and the stylus needle 66 cotiperates with the sound record disk, at the region of the disk most remote from the pivotal axisof the tone arm 50, the structure affords, Within a relatively small space, a relatively long sound conveyer for the reverberation and amplification of the sound waves directed therethrough.

In the form of this invention shown in Figs. 4, 5 and 6, the sound amplifier 70 is supported independently of the partition 22, preferably by attachment to the inclosing cabinet (not shown), and is disposed below the motor 23, having its lower wall 71 substantially parallel with the partition 22 and its upper wall 72 extending below the motor and obliquely upwardly toward the delivery end of the amplifier.

In the latter form of this invention the amplifier 70 is attached to its rearwardly extended section 73, whose walls adjacent to said amplifier are disposed in alinement therewith, and merge into a laterally extended cylindrical portion 74, forming the inlet orifice for said amplifier. Also, in this latter form, the movable tubular section or support 75 is similar to themovable tubular support 39, shown in Figs. 1, 2 and 3, but

- is of greater length, owing to the distance of the amplifier from the partition 22. Said section is connected to oscillate with respect to the section 73 of the amplifier by a horizontal rod or shaft 76, which is mounted in suitable bearing bosses 77 and 78 on the respective sections 73 and 75, and which extendsthrough suitable spiders 78 and 79 disposed in said respective sections, adjacent to their opposed ends.

Extending horizontally from the upper end of the movable tubular section 75, is a tone arm 80 which is-pivotally connected to the upper end of the section 75, preferably in telescopic relation, by a horizontal rod or shaft 81, Which'is mounted in bearing bosses 82 and 83 on the section 75 and tone arm 80 respectively. and which extends through suitable spiders 84 and 85 disposed in said section and said tone arm respectively,-thereby connecting said sections for relative oscillation about a common horizontal axis. Mounted d irectly upon the I coincident with the fixed axis of oscillation of said section 75, the length of the tone arm 80 being such that the point of the stylus needle 87 'is coiiperative with the lines of the record disk 25, which lie between the axis of rotation of the record disk and a vertical plane coincident with the fixed axis of oscillation of the tubular support 75. It will be noted that by this construction, the parallel arrangement for supporting the free end of the horizontal tone arm, comprising the link 57, boss'58, stud 59, lug 60 and pintle 61, as shown in Figs. 1 and 2, may be omitted; the sound reproducer being directly attached to the free end of the tone arm 80. By this arrangement, however, it may be observed that, owing to the fact that the axis of the shaft or rod 81 travels in an arc whose center is the axis of the rod or shaft 76, the distance of the pivotal axis of the tone arm 80 from the plane of the turntable will vary slightly as the tubular support 75 is oscillated, whereby a slight deviation of the plane of the stylus needle with respect to the sound record disk must necessarily occur, which deviation depends in degree upon the distance between the axes of the-rods-76 and 81.

In the construction shown in Figs..4, 5, and 6, the deviation of the plane of the needle with respect to the sound record disk 25 may be reduced by prolonging the tone arm to such an extent as to permit the stylus needle to cotiperate with the sound lines of the disk 25 which are most remote from the vertical plane which coincides With the axis of oscillation of said arm. Such a construction is shown in Figs. 7, 8 and 9, wherein the movable tubular section 90 is ivotally connected to the stationary section 3 of the amplifier in the same manner as the movable tubular section 75 is connected to the stationary section 73 of the amplifier in Figs.

4, 5, and 6, and the tone arm 91 is pivotally connected to the upper end of the movable tubular section 90 in the same manner as the tone arm 80 is connected to the upper end of the movable tubular section 75 in Figs. 4, 5, and 6. The tone arm 91 extends across the turn-table 24 to such an extent as to permit the point of the stylus 93 of the sound reproducer 95, carried by the tone arm, to cooperate with the sound lines of the sound record disk 25 which are most remote from the vertical plane which coincides with the fixed axis of oscillation of the movable'tubular section 90.

In many talking machines in general use the tone arm is pivoted to swing about a vertical axis and carries at its free end a sound reproducer the stylus of which is caused to swing over the sound record disk in a path coincident with the arc of a circle, the

center of which coincides with the pivotal axis of said tone arm, whereby a plane normal to the tablet and coincident with the longitudinal axis of the stylus may possibly not coincide with planes passing through.

- said pivotal axis of said tone arm and tangent to the convolutions of the sound reproducing groove on said record disk.

It has been found by experiment that it may be advantageous to direct the stylus in a rectilinear path radial to the axis of theturn-table, whereby the plane coincident with the longitudinal axis of the stylus and normalto the surface of the record disk is maintained in substantially constant tangential relation to the successive convolutiiorlif of the sound lines on the sound record In disk talking machines wherein the tone arm swings about a vertical axis, the stylus cooperates With the sound record disk on one side of a plane coincident with the axis of oscillation of said tone arm and the axis of rotation of the turn-table, and that in order to afford sufiicient length of tone arm to be efiective to obtain the best results from the sound waves directed therethrough, and

to make the path of the stylus an arc of relatively large radius the axis of the tone arm is located at a considerable distance from the axis of the turn-table, whereby a relatively large cabinet must be provided to inclose such structure, whereas the forms of the invention herein shown and described provide a comparatively long sound con- .veyer which may be inclosed in a'comparatively small cabinet.

It is evident that this invention is not limited to the precise details of construction and arrangement herein set forth, as it is obvious that various modifications may be made therein without departin from the features of the invention as de ned in the appended claims. 1

Having thus described my invention, I claim: i

1. A sound conveyer for talking machines, comprising a sound amplifier, a tone arm, and a tubular section comprising a return bend mounted to oscillate on a horizontal axis, said section having its opposite ends respectively fitted in pivotal relation with said-tone arm and with said amplifier.

2. A sound conveyer for talking machines, comprising a sound amplifier, a tone arm movable in substantially the direction of its axis, and a tubular section comprising a return bend connected to said tone .arm and to said amplifier and lying at all times -in a plane perpendicular to a vertical plane coincident with the longitudinal axis of said tone arm.

3. A sound conveyer for talking machines comprising a sound amplifier, a tone arm,

ing a laterally disposed cylindrical inlet, a

laterally extending tubular section comprising a return bend provided with a cylindricalend pivotally fitted for relative oscillation in said inlet, and a tone arm movably connected to said section and communicating therewith. i

6. A sound conveyer for talking machines, comprising a sound amplifier having a laterally disposed inlet, a tone arm,

and a laterally extending U-shaped section connected to said tone arm and pivotally connected with said amplifier.

7. A sound conveyer for talking machines, comprising aniamplifier, a tone arm, a movable tubular section comprising a laterally disposed return bend, a pivot connecting said tone arm to said section, a pivot parallel to said first mentioned pivot and upon which said section is mounted to' oscillate with respect to said amplifier, and

means acting in a direction at all times substantially parallel with a plane comcident with the axes of said pivots and pivotally supporting said tone arm in a substantially horizontal plane.

8. A sound conveyer for talking machines, comprisingan amplifier, a tone arm, a tubular section providing a laterally d15- posed return-bend connected to said tone arm and connectedfor oscillation relative to said amplifier, and means operative to direct the free end of said tone arm in a rectilinear path. 7

9. A sound conveyer for talking machines, comprisingan amplifier, a tone arm, a tubular section providing a laterally disposed return-bend connected to said tone arm and connected for oscillation relative to said amplifier, and means operative to support said tone arm and to direct it in a substantially rectilinear path.

10. FA sound conveyer for talking machines, comprising an amplifier, a tone arm, a tubular section providing a laterally disposed return-bend connected to said tone arm and connected for oscillation relative to said amplifier, and means operative to support. said tone arm in a substantially horizontal position, and to direct its free end in a substantially rectilinear path.

11. A sound conveyer for talking machines, comprising an amplifier, a tone arm, a tubular section providing a laterally disposed return-bend connected to said tone arm and connected with said amplifier for rela tive oscillation, and substantially parallel motion means operative to support said tone arm for horizontal reciprocation, and to directh its free' end in a substantially rectilinear pat 12. A sound conveyer for talking machines, comprising an amplifier, a tone arm,

a tubular section providing a laterally disposed return-bend connected with said tone arm and with said amplifier, for relative oscillation, means operative to support said tone arm in horizontal position, and effective to direct the free end of said arm in a rectilinear path, and a pivoted connection carried by the free end of said arm, for carrying 'a sound reproducer.

l3. A sound conveyer for talking machines, comprising an amplifier, a tone arm,

a tubular section extended laterally, and

forming a return-bend pivotally connected to said tone arm and said amplifier upon horizontal axes, and a link supporting said tone arm for horizontal reciprocation.

14. A sound conveyer for talking machines, comprising an amplifier, a tone arm,

a laterally extended tubular section operative to oscillate with respect to said tone arm and with respect to said, amplifier, and connected in telescopic relation with said tone arm and with said amplifier, a link sup-' porting said tone arm horizontally, and operative to direct its free end'in a substantially rectilinear path, and a laterally extending connection carried by the free end of said tone arm and arranged to support a sound reproducer.

15. A sound conveyer for talking machines, comprising an amplifierhaving a laterally extended cylindrical inlet, a tone arm having a laterally disposed cylindrical outlet, a tubular return bend having its op-i posite ends telescopically engaged in pivotal relation with said outlet and with said inlet respectively, and a sound reproducer carried by said tone arm and operative to direct the point of a stylus carried thereby in a rectilinear path.

16. In a talking machine, the combination with a cabinet, of a turn-table rotatable therein, and arranged to support a sound record disk, an amplifier disposed beneath said turn-table, a tone arm disposed above said turn-table, and a'tubular section extended laterally, and forming a return-bend PIVOT,

ally connecting said tone arm and said amplifier adjacent to the edge of said turn-table, the

free end of said tone arm extending beyond the axis of said turn-table, and arranged to carry a sound reproducer, and to direct its stylus in a rectilinear path substantially radial to said turn-table, and to substantially amplifier on ahorizontal axis, and a sound reproducer carried by the free end of said tone arm, and having its stylus directed in a rectilinear path,,' substantially coincident with a radius of said turn-table, said tone arm extending beyond the axis of saidturntable and operative to direct the} stylus over that portion of the sound record disk which is most remote from the pivotal connection of said tone arm.

18. In a talking machine, the combinatlon of an amplifier, a tone arm, and a tubular member uniting said amplifiervand said tone arm and having swivel connections therewith, said swivel connections having parallel axes and said tubular member being free to turn on said axes to cause a substantially rectilinear movement of said tone arm..

-19. In a talking machine, the combination of an amplifier, a tone arm, and a tubular emember uniting said amplifier and tone arm and having telescopic connections therewith, said telescopic connections having parallel axes and said tubular member being free to turn on said axes to cause a substantially rectilinear movement of said tone arm.

20. A sound conveyer for talking machines, comprising an amplifier having an opening, a tone arm having a laterally disposed opening, and a unitary tubular member having a return bend with its opposite ends telescopically engaged in pivotal relation with the opening in said amplifier and tone arm respectively.

21. The combination of a hollow sound conveyer, a hollow amplifier, and a tubular section provided at its ends with openmgs cooperative respectively with said conveyer and said amplifier, said section being fitted to turn with respect to said conveyer about an axis coincident with the axis of one of said openings, said section being also fitted to turn with respect to said amplifier about an axis coincident with the axis of the other of said openings.

22. The combination of a hollow sound conveyer, a hollow amplifier, and a tubular ltd section provided at its ends with openings tioned aXis and coincident with the axis of i cooperating respectively with said conveyer the other of said openings. 10

and said amplifier, said section being fitted In witness whereof, I have hereunto set to turn with respect to said conveyer about my hand this 27th day of July, A. D., 1911. an axis coincident with the axis of one of WILBURN N. DENNISON.

said openings, said section being also fitted Witnesses: to turn with respect to said amplifier about FRANK B. MIDDLETON, J r., an axis parallel with the said first-men- CHARLns F. WILLARD.' 

